Malicious PDF — malware analysis report

Static analysis result for SHA-256 c40afe3a2175e818…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 18:27:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8d9f5eedcbc18f02884075d0c8444673 SHA-1: 352af2ef6e1b9b748990e228bd05ba19daa987b7 SHA-256: c40afe3a2175e818586661157a2fe033fd4c4d038af09fc5dfc259cc5c275c4d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains a lure for a "Coin Master Free Spins Generator" and includes multiple URLs pointing to potential game hack or cheat sites. The presence of a "Password-protected archive handoff" heuristic suggests that the user might be prompted to download an archive which requires a password, a common tactic to bypass security filters. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-free-spins-generator-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-mega-13_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-download-for-pc_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-scam-or-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hackaron-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-gui-hack-mac_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-work-at-a-pizza-place-cheats_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-how-to-get-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-call-of-robloxia-5-cheats_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cheat-codes-for-roblox-for-xbox-one_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3455 22656 bytes
SHA-256: 369ff8db3f9eea62a1154f17e5d09a4ecca922706bea9d1758d6e87f23cb7ef9
font_01_sfnt_off000066d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 18176 bytes
SHA-256: 220cc08b156a25e7f0738aa2ffed122a04d3b7eef92f96fc2d602fbd09f3cf7b

Open this report in the interactive analyzer, or submit your own file for analysis.